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Displacement, amplitude, wavelength, frequency and speed, the wave equation and phase difference.
The two wave types, compressions and rarefactions, and the polarisation of transverse waves.
The principle of superposition, nodes and antinodes, and the harmonics of a stretched string.
Path difference, coherence and Young’s double-slit experiment with the fringe equation w = λD/s.
Single-slit diffraction patterns and the diffraction grating equation d sin θ = nλ.
Refractive index, Snell’s law, total internal reflection, the critical angle and optical fibres.
Work through each topic to complete the section.